Option sets: a .o target for shared parameters
A named group of optional parameters, declared once and used by several
klammers, so a writer learns one vocabulary instead of a spelling per
klammer. The "o" target is a pseudo-target beside "k": "k" declares a
klammer's interface and documents it, "o" declares an option interface and
documents it, and neither produces output for any target.
@@caption_args.o :caption :number.bool true :caption_side.side
: Arguments that define a caption for a block element @@
@@code.k :filename @hpos_args :hpos left @ @caption_args :caption_side top @
| text.literal : A source file displayed verbatim @@
A set is used only in the parameter list of a ".k" declaration -- the one
place a klammer's interface is declared once for all of its targets -- and
is resolved as that list is read. Names and types come from the set; a
default may be overridden where it is used. A klammer application in a
parameter list is now a definition-time error.
The SKS gains the sets caption_args and hpos_args (:hpos and :offset), and
@table, @image, @image_grid, @reference and @show gain .k declarations. A
distance is no longer written as a position: :hpos 4em is rejected, and the
same layout is :hpos left :offset 4em. Code listings are numbered by
default, like tables and figures.
New engine sources mac/option_set{,_registry}.{h,cpp}; tst/ ships two more
suites, option_set_test.sh and signature_test.sh (twelve in all).
(from dev 34e536cb0329)
This commit is contained in:
307
tst/option_set_test.sh
Executable file
307
tst/option_set_test.sh
Executable file
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#!/bin/bash
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#
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# option_set_test.sh — Regression tests for option sets (the ".o" target).
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#
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# An option set is a named group of OPTIONAL parameters, declared once and
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# used by several klammers, so that a writer learns one vocabulary instead of
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# a spelling per klammer:
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#
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# @@caption_args.o :caption :number.bool true : A caption @@
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# @@table.k rows.rest(2) @caption_args@ : A table of rows of cells @@
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#
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# The rules this suite holds to:
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#
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# * "o" is a pseudo-target beside "k". A ".o" declaration defines no
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# klammer and produces no output for any target.
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# * A set declares optional parameters only. A positional is not
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# writer-facing, so there is nothing for a set to standardize.
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# * Names and types come from the set; a DEFAULT may be overridden where
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# the set is used, because what varies between klammers is only what
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# silence means for that one klammer.
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# * A set may be used only in the parameter list of a ".k" declaration --
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# the one place a klammer's interface is declared once for all of its
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# targets. Not in a per-target definition, and not in another set.
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# * A klammer application in a parameter list is an error. Splicing a
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# constant klammer there used to be the way to share parameters, and in
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# a ".k" declaration it silently destroyed the whole parameter list.
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#
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# Engine tier: no SKS. Every fixture defines its own target inline.
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#
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# Usage: ./option_set_test.sh
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# Exit code: 0 if all tests pass, 1 otherwise.
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PASS=0
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FAIL=0
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KTEXT=ktext
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K=${KLAMMERTEXT_HOME:?KLAMMERTEXT_HOME must be set}
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red=$'\033[31m'
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green=$'\033[32m'
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bold=$'\033[1m'
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reset=$'\033[0m'
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# The fixture prelude: a target, and two sets to use in declarations.
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PRELUDE='@@@target fix | a fixture target @@@
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@@cap.o :caption :number.bool true :side bottom : A caption for an element @@
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@@pos.o :hpos left : Where an element sits @@'
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# check_eq NAME EXPECTED SOURCE [TARGET] — render SOURCE (for the fix target
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# unless TARGET says otherwise) and compare the trimmed output with EXPECTED.
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check_eq() {
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local name="$1" expected="$2" source="$3" target="${4:-fix}"
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local output status
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output=$("$KTEXT" -k none -s "$PRELUDE
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$source" -t "$target" -d 2>&1)
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status=$?
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output=$(printf '%s' "$output" | tr -d '\n' | sed 's/^[[:space:]]*//; s/[[:space:]]*$//')
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if [ $status -ne 0 ]; then
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echo "${red}FAIL${reset} $name — ktext exited $status"
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echo " output: $(printf '%s' "$output" | head -3)"
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FAIL=$((FAIL + 1))
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return
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fi
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if [ "$output" = "$expected" ]; then
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echo "${green}PASS${reset} $name"
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PASS=$((PASS + 1))
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else
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echo "${red}FAIL${reset} $name"
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echo " expected: [$expected]"
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echo " got: [$output]"
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FAIL=$((FAIL + 1))
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fi
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}
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# check_fails NAME SUBSTRING SOURCE — SOURCE must be rejected, with a
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# message containing SUBSTRING.
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check_fails() {
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local name="$1" needle="$2" source="$3"
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local output status
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output=$("$KTEXT" -k none -s "$PRELUDE
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$source" -t fix -d 2>&1)
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status=$?
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if [ $status -eq 0 ]; then
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echo "${red}FAIL${reset} $name — expected an error, ktext exited 0"
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FAIL=$((FAIL + 1))
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return
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fi
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if printf '%s' "$output" | tr '\n' ' ' | grep -qF "$needle"; then
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echo "${green}PASS${reset} $name"
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PASS=$((PASS + 1))
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else
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echo "${red}FAIL${reset} $name"
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echo " expected error containing: [$needle]"
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echo " got: $(printf '%s' "$output" | tr '\n' ' ' | head -c 300)"
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FAIL=$((FAIL + 1))
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fi
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}
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# check_warns NAME SUBSTRING SOURCE — SOURCE must be accepted, and its
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# combined output must contain SUBSTRING (used where a warning is expected
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# beside the result, so an exact comparison would test the warning's wording).
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check_warns() {
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local name="$1" needle="$2" source="$3"
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local output status
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output=$("$KTEXT" -k none -s "$PRELUDE
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$source" -t fix -d 2>&1)
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status=$?
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if [ $status -ne 0 ]; then
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echo "${red}FAIL${reset} $name — ktext exited $status"
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FAIL=$((FAIL + 1))
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return
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fi
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if printf '%s' "$output" | tr '\n' ' ' | grep -qF "$needle"; then
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echo "${green}PASS${reset} $name"
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PASS=$((PASS + 1))
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else
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echo "${red}FAIL${reset} $name"
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echo " expected a warning containing: [$needle]"
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echo " got: $(printf '%s' "$output" | tr '\n' ' ' | head -c 300)"
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FAIL=$((FAIL + 1))
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fi
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}
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echo "${bold}Option set (.o) tests${reset}"
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echo "====================="
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echo
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# --- The members become the klammer's parameters --------------------------
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# A declaration using a set accepts the set's options, and the writer's
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# arguments reach the body under the names the set declares.
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check_eq " 1. a set's parameters are the klammer's" \
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"[A|top]" \
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'@@e.k x @cap@ : an element @@
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@@e.fix :: [*caption*|*side*] @@
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@e X :caption A :side top @'
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# Absent argument, declared default: the set supplies it.
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check_eq " 2. a member's default applies when the argument is absent" \
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"[|true|bottom]" \
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'@@e.k x @cap@ : an element @@
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@@e.fix :: [*caption*|*number*|*side*] @@
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@e X @'
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# The use site may override a default -- and only the default.
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check_eq " 3. a use-site override changes the default" \
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"[|true|top]" \
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'@@e.k x @cap :side top @ : an element @@
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@@e.fix :: [*caption*|*number*|*side*] @@
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@e X @'
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check_eq " 4. a boolean default can be overridden to false" \
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"[false]" \
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'@@e.k x @cap :number false @ : an element @@
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@@e.fix :: [*number*] @@
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@e X @'
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# An option written alone at the use site takes the argument type's :alone
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# value, exactly as it does where an argument is written.
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check_eq " 5. an override written alone takes the argtype's alone value" \
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"[true]" \
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'@@n.o :number.bool false : A number @@
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@@e.k x @n :number @ : an element @@
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@@e.fix :: [*number*] @@
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@e X @'
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# Three levels: argument type, option set, use site -- and the writer's
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# argument still wins over all of them.
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check_eq " 6. a written argument wins over the overridden default" \
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"[maybe]" \
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'@@e.k x @cap :side top @ : an element @@
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@@e.fix :: [*side*] @@
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@e X :side maybe @'
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check_eq " 7. two sets in one declaration" \
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"[bottom|left]" \
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'@@e.k x @cap@ @pos@ : an element @@
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@@e.fix :: [*side*|*hpos*] @@
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@e X @'
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check_eq " 8. a set's parameters mix with the klammer's own" \
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"[own|bottom]" \
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'@@e.k x :mine own @cap@ : an element @@
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@@e.fix :: [*mine*|*side*] @@
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@e X @'
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# Every target definition is an instance, so all of them get the expanded
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# list: the set is resolved once, in the declaration.
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check_eq " 9. a second target's instance inherits the same parameters" \
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"<bottom>" \
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'@@@target fix2 | another fixture target @@@
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@@e.k x @cap@ : an element @@
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@@e.fix :: [*side*] @@
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@@e.fix2 :: <*side*> @@
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@e X @' \
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fix2
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# --- The declaration is not a klammer -------------------------------------
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check_fails "10. a set defines no klammer" \
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'The klammer "cap" is not defined' \
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'@cap@'
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# --- Where a set may be used ----------------------------------------------
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check_fails "11. not in a per-target definition" \
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'may be used only in the parameter list of a ".k" declaration' \
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'@@e.fix x @cap@ : [*caption*] @@'
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check_fails "12. not in a general definition" \
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'may be used only in the parameter list of a ".k" declaration' \
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'@@e x @cap@ : [*caption*] @@'
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check_fails "13. not in another set" \
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'a set does not include another set' \
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'@@both.o :extra @cap@ : two vocabularies @@'
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# --- A klammer application in a parameter list ----------------------------
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check_fails "14. a klammer application in a parameter list is rejected" \
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'A klammer application in a parameter list is not allowed' \
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'@@c : :spliced @@
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@@e.k x @c@ : an element @@'
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check_fails "15. ... and the message names the declared sets" \
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'Declared option sets: cap, pos' \
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'@@e.k x @nosuch@ : an element @@'
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# --- Use-site overrides ---------------------------------------------------
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check_fails "16. an override must name a member of the set" \
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'The option set "cap" has no parameter ":nope"' \
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'@@e.k x @cap :nope 1 @ : an element @@'
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check_fails "17. an override value is validated at definition time" \
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'does not match the "bool" argument type' \
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'@@e.k x @cap :number perhaps @ : an element @@'
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check_fails "18. an override may not restate the type" \
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'only a default may be given where it is used' \
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'@@e.k x @cap :number.bool false @ : an element @@'
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check_fails "19. an override may not give a positional value" \
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'gives a value that is not an option' \
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'@@e.k x @cap here @ : an element @@'
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# --- What a set may declare -----------------------------------------------
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check_fails "20. a positional parameter is rejected" \
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'An option set declares only optional parameters' \
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'@@bad.o p :q : oops @@'
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check_fails "21. a rest parameter is rejected" \
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'An option set declares only optional parameters' \
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'@@bad.o r.rest :q : oops @@'
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check_fails "22. a set with no parameters is rejected" \
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'declares no parameters' \
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'@@bad.o : nothing at all @@'
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check_fails '23. "::" has no meaning for a set' \
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'An option set IS a declaration' \
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'@@cap.o :: nope @@'
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# --- Collisions -----------------------------------------------------------
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check_fails "24. two sets declaring the same name name both sets" \
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'from the option set "cap"' \
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'@@other.o :side right : another side @@
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@@e.k x @cap@ @other@ : an element @@'
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check_fails "25. a set colliding with a declared parameter" \
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'declared in the parameter list' \
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'@@e.k x :side own @cap@ : an element @@'
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# --- Redefinition ---------------------------------------------------------
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check_fails "26. declaring a set twice is an error" \
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'Option set "cap.o" already defined' \
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'@@cap.o :caption : a second caption @@'
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# A set is its own declaration, so an override restates what it declares --
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# there is no ".k" for it to inherit a parameter list from.
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check_warns '27. ":::" overrides a set, with a warning' \
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'overridden' \
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'@@cap.o :caption :number.bool true :side top ::: a replaced caption @@'
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check_warns "28. ... and the overriding declaration is what a klammer gets" \
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"[top]" \
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'@@cap.o :caption :number.bool true :side top ::: a replaced caption @@
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@@e.k x @cap@ : an element @@
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@@e.fix :: [*side*] @@
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@e X @'
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# A "::::" default is silently superseded by a later create, and the create
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# is what the using declaration gets.
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check_eq "29. a default set is superseded by a later declaration" \
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"[right]" \
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'@@d.o :where left :::: a default @@
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@@d.o :where right : the real one @@
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@@e.k x @d@ : an element @@
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@@e.fix :: [*where*] @@
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@e X @'
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echo
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echo "====================="
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echo "Results: ${green}$PASS passed${reset}, ${red}$FAIL failed${reset}"
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[ $FAIL -eq 0 ]
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Reference in New Issue
Block a user